Electrical modeling of the circulatory system in lie detection test to evaluate blood pressure changes in radial artery

Subject Areas : Information Technology in Engineering Design (ITED) Journal

Mohammad Amin Younesi Heravi ¹ , Mohammad Ali khalilzadeh ²

1 - Department of Basic Sciences, School of Medicine, North Khorasan University of Medical Sciences (NKUMS), Bojnurd, Iran
2 - Department of Biomedical Engineering, Mashhad Branch, Islamic Azad University, Mashhad, Iran

Received: 2014-06-20 Accepted : 2015-01-20 Published : 2015-02-20

Keywords:

Abstract :

The aim of this study was to present a model of circulatory system by applying blood pressure cuff toassess blood pressure and blood volume changes in hand arteries. Modeling of cardiovascular systemwas carried out by electrical circuits. It was done in normal conditions and neural system activation.Each artery was modeled based on mechanical properties and its electrical equivalent. the output ofmodel included pressure and volume curve in arteries and capillaries. The results in normal conditionsshowed that change of pressure and volume in arteries and capillaries were similar. when the neuralsystem was activated, cardiac contractility increased and changes of blood pressure and volumes werenot similar in capillaries. But, arteries pressure and volume was changed similarly and it had a linearrelationship. The results of this modeling could be used for removing the cuff and it could besuggested in polygraphy and lie detecton test.